Cast Music to Google Home




I'm sorry, idk if this is in the correct area specifically but this seemed close. I have set up a raspberry pi Plex server with phlex and can cast videos to my Chromecast. Works surprisingly well actually. However, when I try to stream music to my Google home (not my Chromecast), I get a sound on my Google home but then it never plays. I thought if I can stream to my Chromecast, I should be able to stream to my Google home. I don't even know where to start looking. I'm guessing my Plex server logs? ....which are.... somewhere..... If you could help point me in the right direction?